Wonderbar
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From: La Mirada, California
Car: 1991 Camaro RS
Engine: L98 350 TPI
Transmission: 700R4
Axle/Gears: ZT LSD with 3.42 - LS1 brakes
Wonderbar
Hey all,
This is probably going to sound like a VERY dumb question, but how difficult is the installation of a wonderbar? I just bought one from TDS (should be here by the weekend)... and it looks like it is very simple and straight forward:
-remove bolts for sway bar bushing
-Slide it in between bushing and frame
-put bolts back in
But I know that it cant be that easy... nothing ever is
I'm probably only going to have a 30 or so min window of time this weekend to do it, so would that be enough time?
Thanks in advance, and don't kill me cuz I have to borrow someone else's driveway (and have very limited time to do so)
-Tim-
This is probably going to sound like a VERY dumb question, but how difficult is the installation of a wonderbar? I just bought one from TDS (should be here by the weekend)... and it looks like it is very simple and straight forward:
-remove bolts for sway bar bushing
-Slide it in between bushing and frame
-put bolts back in
But I know that it cant be that easy... nothing ever is
I'm probably only going to have a 30 or so min window of time this weekend to do it, so would that be enough time?
Thanks in advance, and don't kill me cuz I have to borrow someone else's driveway (and have very limited time to do so)
-Tim-
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Wonderbar
This is probably going to sound like a VERY dumb question, but how difficult is the installation of a wonderbar? I just bought one from TDS (should be here by the weekend)... and it looks like it is very simple and straight forward:
-remove bolts for sway bar bushing
-Slide it in between bushing and frame
-put bolts back in
But I know that it cant be that easy... nothing ever is
I'm probably only going to have a 30 or so min window of time this weekend to do it, so would that be enough time?
-remove bolts for sway bar bushing
-Slide it in between bushing and frame
-put bolts back in
But I know that it cant be that easy... nothing ever is
I'm probably only going to have a 30 or so min window of time this weekend to do it, so would that be enough time?
JamesC
Thread Starter
Senior Member
iTrader: (9)
Joined: Jun 2002
Posts: 742
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From: La Mirada, California
Car: 1991 Camaro RS
Engine: L98 350 TPI
Transmission: 700R4
Axle/Gears: ZT LSD with 3.42 - LS1 brakes
Re: Wonderbar
Thanks James, I just didn't think that it could be that easy... I know when I changed my EGR valve, it took me about 4 hours to do it... and that looked simple eoungh...
I guess that I am juat a little skeptical of things that seem to easy...
But I will def start WD-40-ing tonight, thanks for the advice!!
I guess that I am juat a little skeptical of things that seem to easy...
But I will def start WD-40-ing tonight, thanks for the advice!!
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Posts: 600
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From: Old Bridge, NJ
Car: 1992 Camaro RS
Engine: 383 SuperRam
Transmission: 4L60
Axle/Gears: 3:23 Posi
Re: Wonderbar
Sometimes it can be a pain to hold everything up to align the bolts back up so you could use a jack stand or something to hold everything up while you slide the wonder bar in and put the bolts back in.
Joined: Sep 2005
Posts: 27,962
Likes: 2,471
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Wonderbar

Yup, it REALLY IS that easy...
Derek is right about the hardest thing being the holding up stuff to put the bolts in. Other than that, it's one of the easiest mods there is.
Don't expect anything radical; on my car, it tightened it up, most noticeable whan hitting a bump while going over a corner. It didn't improve handling or anything like that. Just, seemed like the car was a bit firmer and more solid, under certain circumstances. Definitely good, but subtle.
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Joined: Sep 2007
Posts: 617
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From: Chicagoland Area
Car: '89 GTA/'86 TA/98 TA
Engine: 350/350/LS1
Transmission: R4/T5/4L60E
Axle/Gears: 3.23/2.77/3.73
Re: Wonderbar
What exactly does the wonderbar do. It is a steering brace right. Why do our cars need it. Our cars were made for performance so wouldnt this ruin the point of it?
Senior Member
Joined: Jul 2007
Posts: 1,461
Likes: 1
From: Manchester, CT + Nashua, NH
Car: 90 Firebird Formula
Engine: LO3
Transmission: T5
Axle/Gears: 3.08 one wheel peel
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Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Wonderbar
JamesC
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Re: Wonderbar
The Camaro Parts and Illustration Catalog, in a diagram of the front suspension, calls it a "Wonderbar" in red lettering. In the description, it's called a Brace, Upr Structure. Odd, but somehow interesting.
JamesC
JamesC
Last edited by JamesC; Feb 21, 2008 at 08:43 AM.
Thread Starter
Senior Member
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Joined: Jun 2002
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From: La Mirada, California
Car: 1991 Camaro RS
Engine: L98 350 TPI
Transmission: 700R4
Axle/Gears: ZT LSD with 3.42 - LS1 brakes
Re: Wonderbar
I know that it wont do alot performance wise... I was mostly getting it because of the reduced stress on the other steering parts
That, and the next one that I am gonna get are SFCs, and I would just think that SFCs without a steering brace wouldn't work as well as SFC's with one...
I dont know for sure, but hopefully it will at least keep my alignment on for more than a week
-Tim-
That, and the next one that I am gonna get are SFCs, and I would just think that SFCs without a steering brace wouldn't work as well as SFC's with one...
I dont know for sure, but hopefully it will at least keep my alignment on for more than a week
-Tim-
Joined: Sep 2005
Posts: 27,962
Likes: 2,471
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Wonderbar
It doesn't reduce stress on any steering parts.
All it does is brace the "frame" part of the unibody, where it sticks out toward the bumper.
Think about your steering..... you've got a Pitman arm and an idler arm, which are parallel, and which pivot around fixed points on the frame; and you've got a center link, which connects the 2 of those together. Those 3 things form 3 sides of a parallelogram. The 4th side is ...... empty space, between the 2 halves of the frame. All that the "wonderbar" does, is connect that empty space together, to complete the parallelogram.
GM introduced it to employ the pass side "frame" to help stabilize the steering gear mount point. But, in addition to that, it "perfects" the operation of the steering somewhat, since if that 4th side of that parallelogram doesn't stay a constant length (like, if the driver's side of the "frame" bends from the force of the steering gear), then the 2 wheels will steer differently. The toe will vary all over the place. The bar GREATLY reduces that (which in theory should reduce tire wear a bit, but I have no clue whether that actually results). And, it adds to the overall stiffness of the front end, much like a strut tower brace does. Which is what I mainly noticed; the whole car just felt more solid and firm, especially when hitting bumps at the same time as going around corners. I couldn't tell any change in the steering itself, or in the handling. The effect was not just super obvious. More of a minor tweek. About 10% or less as much effect as SFCs.
It's not going to "keep" your alignment. If the alignment doesn't stay constant, you have other issues somewhere.
All it does is brace the "frame" part of the unibody, where it sticks out toward the bumper.
Think about your steering..... you've got a Pitman arm and an idler arm, which are parallel, and which pivot around fixed points on the frame; and you've got a center link, which connects the 2 of those together. Those 3 things form 3 sides of a parallelogram. The 4th side is ...... empty space, between the 2 halves of the frame. All that the "wonderbar" does, is connect that empty space together, to complete the parallelogram.
GM introduced it to employ the pass side "frame" to help stabilize the steering gear mount point. But, in addition to that, it "perfects" the operation of the steering somewhat, since if that 4th side of that parallelogram doesn't stay a constant length (like, if the driver's side of the "frame" bends from the force of the steering gear), then the 2 wheels will steer differently. The toe will vary all over the place. The bar GREATLY reduces that (which in theory should reduce tire wear a bit, but I have no clue whether that actually results). And, it adds to the overall stiffness of the front end, much like a strut tower brace does. Which is what I mainly noticed; the whole car just felt more solid and firm, especially when hitting bumps at the same time as going around corners. I couldn't tell any change in the steering itself, or in the handling. The effect was not just super obvious. More of a minor tweek. About 10% or less as much effect as SFCs.
It's not going to "keep" your alignment. If the alignment doesn't stay constant, you have other issues somewhere.
Thread Starter
Senior Member
iTrader: (9)
Joined: Jun 2002
Posts: 742
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From: La Mirada, California
Car: 1991 Camaro RS
Engine: L98 350 TPI
Transmission: 700R4
Axle/Gears: ZT LSD with 3.42 - LS1 brakes
Re: Wonderbar
Well, I know that my car has some other issues also...
Anyways, thanks for the info!! that was really helpful!!
-Tim-
Anyways, thanks for the info!! that was really helpful!!
-Tim-
Joined: Sep 2000
Posts: 2,506
Likes: 195
From: Moorpark, CA
Car: '91 GTA, '92 T/A Convertible
Engine: GTA: 350 w/Vortec heads, T/A: 305
Transmission: Pro-built 700R4
Axle/Gears: GTA: 3.27, T/A: 2.73
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snakeshooter
Suspension and Chassis
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Sep 10, 2015 07:46 AM









The correct name is Steering Box Support. 